Hunting queries

Kindly help me out! 1. Not able to find Bisons anymore in the place marked in the map, I am in chapter 4 now.

1. I have been hunting for sometime now, however, I find non perfect skinned animals in the random encounters increasingly. So I am not able to hunt them for camp upgrades. Is there something wrong?

2. Legendary fish locations are not showing up on my main map, how to enable it? I have already got the map from the Gil guy.

3. What is the maximum money you get for a robbed wagon in emerald ranch?

4. Will normal animals go "extinct" if hunted too much? Game logic works that way?

5. How to get more money for horses captured from wild?